What does the term "arc flash" refer to?

The term "arc flash" refers to a dangerous release of energy caused by an electric arc. This phenomenon occurs when there is a fault in the electrical system, allowing a high current to flow through the air between conductive parts, such as wires or terminals. The intense heat generated during this process can result in explosive force, causing severe injuries, burns, or even fatalities to nearby personnel, as well as significant damage to equipment.

Understanding arc flash is critical for linemen and electrical workers because it emphasizes the importance of safety measures, including proper training, protective gear, and adherence to safety protocols. The serious nature of arc flash incidents necessitates comprehensive safety programs to mitigate risks associated with working on or near energized equipment.